A monthly retainer is a fixed fee a client pays every month, usually in advance, for an agreed entitlement from a consultancy or agency: a block of capacity, priority access to named people, or an ongoing service with a defined scope. It differs from a project, which ends when the deliverable is accepted, and from a managed service, which prices responsibility for a system rather than time with a person. Retainers are how most services firms first earn revenue that repeats, and they are priced well when the fee is worked from the firm’s cost base and utilisation (utilization), not from a round number that felt comfortable.
Retainer, managed service or project?
The three are often confused in proposals and frequently confused in the accounts. The differences are in what the client buys, what the supplier commits to and how the revenue behaves.
| Project | Monthly retainer | Managed service | |
|---|---|---|---|
| What the client buys | A defined deliverable | Capacity, access or a scoped ongoing service | Responsibility for a system or function |
| How it is priced | Fixed price or time and materials against a rate card | A fixed monthly fee for the entitlement | A fee per unit of responsibility, often tiered |
| When it ends | On acceptance of the deliverable | On notice, typically one to three months | On notice, typically twelve months or more |
| What the supplier plans around | The project timeline | Committed monthly capacity | Service levels and the estate under management |
| How diligence counts the revenue | Non-recurring | Recurring only if contracted and renewing | Recurring, if the contract term supports it |
| Where it goes wrong | Scope creep | Unused days, undefined scope, silent rollover | Fee anchored to the wrong unit |
The row on revenue matters more than founders expect. A retainer on one month’s notice is real money but not the same recurring revenue as a three-year managed service, and a buyer of the business will count them differently. The counting recurring revenue playbook covers the four readings.
The three retainer shapes
Every retainer I have seen a consultancy or agency sell is one of three shapes, and the shape decides the price.
The capacity retainer. The client buys a block of days or hours every month at an agreed grade. This is the agency retainer model most people picture: a marketing agency retained for eight days a month, a consultancy retained for two days a week of a lead consultant’s time. It is the easiest to price and the easiest to lose money on, because unused days either roll over into a growing liability or expire and leave the client feeling short-changed.
The access retainer. The client pays for availability rather than volume: the right to call, to get a same-day answer, to have a named person who knows the estate. Advisory and fractional-leadership retainers are usually this shape. The cost to you is the capacity held open; the value to the client is not waiting.
The service retainer. The client pays a fixed monthly fee for an ongoing scoped service: a channel run, a platform kept current, a reporting cycle delivered. This is the shape closest to a managed service and should be priced like one, on the unit of responsibility rather than on hours. It moves you furthest towards recurring revenue, because the client is buying an outcome that continues rather than a person who might.
How to price each shape
Work from the cost base, as with a day rate. The retainer does not change the arithmetic; it changes what you are committing to.
Capacity retainers are priced from the rate card. Days committed per month, multiplied by the rate for the grade doing the work, less a discount for the commitment. Keep the discount modest and tie it to the notice period: a client on three months’ notice has bought you planning certainty, and that is worth something to your cash flow. A client on one month’s notice has bought a discount for nothing. Never go below the floor the cost base set, and write down what happens to unused days before the first month ends.
Access retainers are priced on the cost of holding capacity open and the value of the availability. Holding half a day a week free for one client is half a day you cannot sell elsewhere, so that is the floor. Above it, the price reflects how much waiting costs the client, which you can only learn by asking.
Service retainers are priced per unit of responsibility. Choose a unit both sides can count and that tracks the effort: a site, an application, a channel. Score the units for difficulty, tier them, and attach a fee to each tier. The guide to pricing managed services sets out that method in full, including a fee that falls as the estate improves.
Whichever shape, the agreement should state the entitlement, the rollover or expiry rule, the notice period, how work is prioritised when the client asks for more than the month holds, and the fee review date. Most retainer disputes begin as a gap between what the client thought they had bought and what the invoice describes.
The cash-flow sequence for moving from projects to retainers
Retainers rarely arrive as a strategy. They arrive as a customer who keeps giving you work.
One of the early customers of the business Steve and I started in 2013, the business that became DevOpsGroup, a services company helping other businesses build and run software, kept coming back. Each conversation began somewhere familiar: we knew more about their world than last time, and there was more useful work to do. That continuity gave the week a shape and the team a reason to improve how it worked. Within our first year there was a client-onboarding checklist, and I wanted it in the wiki where the next person could use it.
That relationship taught me a sequence I would now run deliberately rather than discover:
- Notice the anchor. Look for the client whose work never quite stops. Their continuing work is already a retainer in everything but the paperwork, and you are carrying the cash-flow risk of it without the certainty.
- Name the service. Write down what you actually do for them every month. That description is the scope of the first retainer, and the exercise usually shows that the work is more regular than either side had noticed.
- Price the capacity you already spend. The first retainer should cover the days you are already giving that client, at the rate card, so that converting it costs you nothing and the discount for commitment is the only concession.
- Bill in advance. Invoice at the start of the month, not the end. Moving one client from arrears to payment in advance is the largest cash-flow improvement a small services firm can make, and it is why retainers fund the next stage of the business rather than draining it.
- Build the process while the relationship is healthy. Onboarding checklists, reporting formats, the definition of what is included: build them on the anchor client and carry them to the next one.
- Watch concentration. A regular customer’s needs are immediate and can occupy more of the firm than the invoices suggest. Review revenue and capacity together while the relationship is good, so that you have choices before a renegotiation forces them.
- Count it honestly. A retainer on short notice is a good start and not yet the recurring revenue a buyer will pay for. Know which rung each contract sits on.
The company I helped build did most of this. It built the machine for recurring work and never fully shifted the mix away from projects, which is a lesson about sequence: retainers have to be sold as deliberately as projects, or the projects keep winning the week.
Where to go next
The course How to build recurring revenue in a consultancy or agency, in development, covers pricing, packaging and the sequence for moving from projects to retainers and managed services without breaking cash flow. For the definitions, see recurring revenue and what a rate card is.